linux-kernel - [PATCH 0/7] Fix UBI Block wrt. highmem

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Message-Id: <20230810160019.16977-1-richard@nod.at>
Date:   Thu, 10 Aug 2023 18:00:11 +0200
From:   Richard Weinberger <richard@....at>
To:     linux-mtd@...ts.infradead.org
Cc:     Christoph Hellwig <hch@...radead.org>,
        Stephan Wurm <stephan.wurm@...berle.de>,
        Richard Weinberger <richard@....at>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Oliver Neukum <oliver@...kum.org>,
        Ali Akcaagac <aliakc@....de>,
        Jamie Lenehan <lenehan@...bble.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: [PATCH 0/7] Fix UBI Block wrt. highmem

Patch 1 changes UBIblock to use a copy of scsi_kmap_atomic_sg()
for sg list processing. This patch is meant for backporting to stable.
It makes use of kmap_atomic() and a bounce buffer because MTD/UBI IO
can sleep.

Patches 2 to 7 move scsi_kmap_atomic_sg() into lib/scatterlist.c,
convert it to kmap_local(), convert all users to it and remove the
bounce buffer from UBIblock again.

Richard Weinberger (7):
  ubi: block: Refactor sg list processing for highmem
  scatterlist: Add kmap helpers
  scsi: dc395x: Switch to kmap_sg
  scsi: esp_scsi: Switch to kmap_sg
  scsi: fdomain: Switch to kmap_sg
  ubi: block: Switch to kmap_sg
  scsi: core: Remove scsi_kmap_atomic_sg()

 drivers/mtd/ubi/block.c     | 11 +++----
 drivers/mtd/ubi/eba.c       | 50 +++++++++++++------------------
 drivers/scsi/dc395x.c       | 12 ++++----
 drivers/scsi/esp_scsi.c     |  4 +--
 drivers/scsi/fdomain.c      | 10 +++----
 drivers/scsi/scsi_lib.c     | 60 -------------------------------------
 include/linux/mtd/ubi.h     | 12 ++++----
 include/linux/scatterlist.h |  3 ++
 include/scsi/scsi_cmnd.h    |  4 ---
 lib/scatterlist.c           | 55 ++++++++++++++++++++++++++++++++++
 10 files changed, 100 insertions(+), 121 deletions(-)

-- 
2.35.3